401423610517 has 2 divisors, whose sum is σ = 401423610518. Its totient is φ = 401423610516.

The previous prime is 401423610491. The next prime is 401423610559. The reversal of 401423610517 is 715016324104.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 256480460721 + 144943149796 = 506439^2 + 380714^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-401423610517 is a prime.

It is a super-2 number, since 2×401423610517² (a number of 24 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (401423611517) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 200711805258 + 200711805259.

It is an arithmetic number, because the mean of its divisors is an integer number (200711805259).

Almost surely, 2^401423610517 is an apocalyptic number.

It is an amenable number.

401423610517 is a deficient number, since it is larger than the sum of its proper divisors (1).

401423610517 is an equidigital number, since it uses as much as digits as its factorization.

401423610517 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 20160, while the sum is 34.

The spelling of 401423610517 in words is "four hundred one billion, four hundred twenty-three million, six hundred ten thousand, five hundred seventeen".